texcoorgenerate.cpp

DX例子中等难度的。全是新例子。VC2003

    g_SampleUI.SetSize( 170, 300 );

	//恢复字体
    if( g_pFont )
        V_RETURN( g_pFont->OnResetDevice() );
   
	//创建ID3DXSprite接口对象
    V_RETURN( D3DXCreateSprite( pd3dDevice, &g_pTextSprite ) );

	//设置观察矩阵
	D3DXMATRIXA16 matView;
	D3DXVECTOR3 vEyePt( 0.0f, 0.0f,-3);
    D3DXVECTOR3 vLookatPt( 0.0f, 0.0f, 0.0f );
    D3DXVECTOR3 vUpVec( 0.0f, 1.0f, 0.0f );
    D3DXMatrixLookAtLH( &matView, &vEyePt, &vLookatPt, &vUpVec );
    pd3dDevice->SetTransform( D3DTS_VIEW, &matView );

	//设置投影矩阵
	D3DXMATRIXA16 matProj;
	float fAspectRatio = (float)pBackBufferSurfaceDesc->Width / pBackBufferSurfaceDesc->Height;
    D3DXMatrixPerspectiveFovLH( &matProj, D3DX_PI/4, fAspectRatio, 1.0f, 100.0f );
    pd3dDevice->SetTransform( D3DTS_PROJECTION, &matProj );

	pd3dDevice->SetRenderState( D3DRS_LIGHTING, false );         //关闭灯光

	//设置纹理阶段状态
	pd3dDevice->SetTexture( 0, g_pTexture );
	pd3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP,   D3DTOP_SELECTARG1 );
	pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE );
	pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAOP,   D3DTOP_DISABLE );

	//利用摄影机空间顶点位置生成纹理坐标
	pd3dDevice->SetTextureStageState( 0, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_CAMERASPACEPOSITION );
	pd3dDevice->SetTextureStageState( 0, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT2 );

    return S_OK;
}


//-----------------------------------------------------------------------------
// Desc: 更新场景
//-----------------------------------------------------------------------------
void CALLBACK OnFrameMove( IDirect3DDevice9* pd3dDevice, double fTime, 
						   float fElapsedTime, void* pUserContext )
{
}


//-----------------------------------------------------------------------------
// Desc: 渲染场景
//-----------------------------------------------------------------------------
void CALLBACK OnFrameRender( IDirect3DDevice9* pd3dDevice, double fTime, 
							float fElapsedTime, void* pUserContext )
{
    HRESULT hr;
  
	//如果正在利用Direct3D设备设置对话框进行设置, 则不渲染场景
    if( g_SettingsDlg.IsActive() )
    {
        g_SettingsDlg.OnRender( fElapsedTime );
        return;
    }

    //清除后台颜色缓冲区和深度缓冲区
    V( pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, 
		                 D3DCOLOR_ARGB(0, 45, 50, 170), 1.0f, 0) );

    //渲染场景
    if( SUCCEEDED( pd3dDevice->BeginScene() ) )
    {
		//渲染顶点缓冲区
        pd3dDevice->SetStreamSource( 0, g_pVB, 0, sizeof(CUSTOMVERTEX) );
		pd3dDevice->SetFVF( D3DFVF_CUSTOMVERTEX );
		pd3dDevice->DrawPrimitive( D3DPT_TRIANGLESTRIP, 0, 2);

		//渲染文本和控件
        DXUT_BeginPerfEvent( DXUT_PERFEVENTCOLOR, L"HUD / Stats" ); 
        RenderText();
        V( g_HUD.OnRender( fElapsedTime ) );
        V( g_SampleUI.OnRender( fElapsedTime ) );
        DXUT_EndPerfEvent();

        V( pd3dDevice->EndScene() );
    }
}


//-----------------------------------------------------------------------------
// Desc: 渲染文本
//-----------------------------------------------------------------------------
void RenderText()
{
    CDXUTTextHelper txtHelper( g_pFont, g_pTextSprite, 15 );

    //显示当前Direct3D设备状态和渲染帧速率
    txtHelper.Begin();
    txtHelper.SetInsertionPos( 5, 5 );
    txtHelper.SetForegroundColor( D3DXCOLOR( 1.0f, 1.0f, 0.0f, 1.0f ) );
    txtHelper.DrawTextLine( DXUTGetFrameStats(true) );
    txtHelper.DrawTextLine( DXUTGetDeviceStats() );

	//显示其他简要信息
    txtHelper.SetForegroundColor( D3DXCOLOR( 1.0f, 1.0f, 1.0f, 1.0f ) );
    txtHelper.DrawTextLine( L"纹理坐标自动生成" );
    
    //显示简单帮助文本
    const D3DSURFACE_DESC* pd3dsdBackBuffer = DXUTGetBackBufferSurfaceDesc();
    if( g_bShowHelp )
    {
        txtHelper.SetInsertionPos( 10, pd3dsdBackBuffer->Height-15*6 );
        txtHelper.SetForegroundColor( D3DXCOLOR( 1.0f, 0.75f, 0.0f, 1.0f ) );
        txtHelper.DrawTextLine( L"Controls (F1 to hide):" );

        txtHelper.SetInsertionPos( 40, pd3dsdBackBuffer->Height-15*5 );
        txtHelper.DrawTextLine( L"Quit: ESC" );
    }
    else
    {
        txtHelper.SetInsertionPos( 10, pd3dsdBackBuffer->Height-15*2 );
        txtHelper.SetForegroundColor( D3DXCOLOR( 1.0f, 1.0f, 1.0f, 1.0f ) );
        txtHelper.DrawTextLine( L"Press F1 for help" );
    }
    txtHelper.End();
}


//-----------------------------------------------------------------------------
// Desc: 消息处理
//-----------------------------------------------------------------------------
LRESULT CALLBACK MsgProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, 
						 bool* pbNoFurtherProcessing, void* pUserContext )
{
    *pbNoFurtherProcessing = g_DialogResourceManager.MsgProc( hWnd, uMsg, wParam, lParam );
    if( *pbNoFurtherProcessing )
        return 0;

    if( g_SettingsDlg.IsActive() )
    {
        g_SettingsDlg.MsgProc( hWnd, uMsg, wParam, lParam );
        return 0;
    }

    *pbNoFurtherProcessing = g_HUD.MsgProc( hWnd, uMsg, wParam, lParam );
    if( *pbNoFurtherProcessing )
        return 0;
   
	*pbNoFurtherProcessing = g_SampleUI.MsgProc( hWnd, uMsg, wParam, lParam );
    if( *pbNoFurtherProcessing )
        return 0;

    return 0;
}


//-----------------------------------------------------------------------------
// Desc: 键盘消息处理
//-----------------------------------------------------------------------------
void CALLBACK KeyboardProc( UINT nChar, bool bKeyDown, bool bAltDown, void* pUserContext )
{
    if( bKeyDown )
    {
        switch( nChar )
        {
            case VK_F1: g_bShowHelp = !g_bShowHelp; break;
        }
    }
}


//-----------------------------------------------------------------------------
// Desc: 处理各种控件消息
//-----------------------------------------------------------------------------
void CALLBACK OnGUIEvent( UINT nEvent, int nControlID, CDXUTControl* pControl, 
						 void* pUserContext )
{
    switch( nControlID )
    {
        case IDC_TOGGLEFULLSCREEN:
			DXUTToggleFullScreen(); 
			break;

        case IDC_TOGGLEREF:
			DXUTToggleREF(); 
			break;

        case IDC_CHANGEDEVICE:
			g_SettingsDlg.SetActive( !g_SettingsDlg.IsActive() ); 
			break;
    }
}


//-----------------------------------------------------------------------------
// Desc: 释放在OnResetDevice()中创建的资源
//-----------------------------------------------------------------------------
void CALLBACK OnLostDevice( void* pUserContext )
{
    g_DialogResourceManager.OnLostDevice();
    g_SettingsDlg.OnLostDevice();
    if( g_pFont )
        g_pFont->OnLostDevice();
    SAFE_RELEASE( g_pTextSprite );
}


//------------------------------------------------------------------------------
// Desc: 释放在OnCreateDevice()中创建的资源
//------------------------------------------------------------------------------
void CALLBACK OnDestroyDevice( void* pUserContext )
{
    g_DialogResourceManager.OnDestroyDevice();
    g_SettingsDlg.OnDestroyDevice();
    SAFE_RELEASE( g_pFont );

	SAFE_RELEASE( g_pTexture );
	SAFE_RELEASE( g_pVB );
}